The explanation is that each aspen while appearing to exist separately as a single tree, is in fact only the stem or shoot of a far larger organism.
对此的解释是，每一棵白杨，虽然看起来是独立存在的一棵树，但实际上只是一个巨型有机体的茎或芽。
Many of Mr Obama's mistakes stem from a single strategic miscalculation: he is trying to do too much too quickly.
奥巴马的许多错误产生于一个简单的战略错判：他太急于求成了。
Single and alone in the unfathomed stillness of the soul, art thou, Lady of Silence and Solitude, a vision thrilled with light, a lonely lotus blossoming on the stem of love.
你孑身独处在灵魂的无边寂寞里，沉静而寂寞的姑娘，你是一个光芒闪耀的景象，是一朵孤独的莲花盛开在爱情的茎枝上。
The ACT team also froze the embryos and used the single cell that was removed as a source of human embryonic stem cells.
ACT小组也将实验中的这些胚胎组织冻存，使用分离的单细胞作为人类胚胎干细胞的来源。
CML starts with a change to a single stem cell. A stem cell is a type of cell found in marrow that makes red cells, white cells and platelets.
慢粒的发病源于单个干细胞的变异。干细胞存在于骨髓中，可以分化成红细胞、白细胞和血小板。
The influence of leaf Numbers attached on an alfalfa stem on the drying rate was analyzed and compared with that of a single leaf and a single stem.
分析了苜蓿茎上附着的叶片数对其干燥速率的影响，并与单叶和单茎的干燥速率进行了对比。
This vessel is made of steel, catamaran, fore raked stem, transom stern, round bilge, fore raised deck, single open deck, double main engines, double propellers, double rudders.
本船为钢质双体船，前倾艏柱，方艉圆舭，艏升高甲板单层露天甲板，双主机双螺旋桨双舵。
Single stem weight and harvest index were both high and stable in the stable yield cultivars.
稳产性好的品种单茎干重大而稳定，收获指数高并有一定的稳定性。
Methods Serum free cells suspension culture and single cell cloning technique were used to isolate neuroepithelial stem cells.
方法利用无血清悬浮培养、单细胞克隆技术分离神经上皮干细胞；
In the detection of IPF1 gene with single cell RT-PCR, 12 single pancreatic stem cells were detected, and another 12 undifferentiated single pancreatic stem cells were taken as controls.
单细胞反转录酶聚合链式反应检测胰岛素促进因子基因实验中，选择12个单个胰腺干细胞进行检测，另取12个单个未分化的干细胞作为对照。
It typically hits the whole plant at one time, but sometimes it is limited to the foliage attached to a single stem or area.
典型的枯萎病会一次波及整株植物，但有时也会限于植株的单枝或一定范围。
Objective To investigate the memory amelioration of the AD model rat after a single or combined transplantation of the neural stem cells(NSCs) modified with gene of NGF or GDNF.
目的观察NGFGDNF基因修饰神经干细胞（NSC）单独和联合移植对AD模型鼠的学习记忆改善作用。
The cancer stem cell hypothesis posits that tumors are derived from a single cancer-initiating cell with stem cell properties.
肿瘤干细胞学说表明肿瘤由一个具有干细胞特征的肿瘤始祖细胞分化而来。
The research indicated that the critical compressive force of drill stem in horizontal well is closely related with the length of single drill pipe in use.
研究表明，水平井眼中钻柱所能承受的临界载荷和所使用钻杆的单根长度有密切关系。
The longer the single drill pipe, the lesser the critical compressive force of drill stem.
钻杆的单根长度越长，钻柱所能承受的临界载荷越小。
This invention could also be used for research products including single agents or mixtures of agents to promote, proliferate, differentiate, or maintain neurons from stem or progenitor cells.
本发明也可以用于研究产品，包括单个药剂或药剂的混合物，以促进、增加、区分或维持干细胞或祖细胞的神经元。
The damage process of paddy stem borer to rice plant can be regarded as a single input-single output system.
三化螟为害水稻的过程可以看作一个单输入——单输出系统。
Generally, the total boll numbers of multi-stem cotton was significantly increased, but single boll weigh on average was lower.
综合来看，多茎株型单株成铃显著增加，但平均铃重较低。
And there is also interrelation of different degree between the rest and the output of a single stem.
其他各性状均与单株产量存在不同程度的相关。
The stem sap flow of T. ramosissima presented a single-peaked curve, with an obvious day and night variation rhythm and fluctuated with environment factors.
多枝柽柳的茎干液流呈单峰曲线型，有明显的昼夜变化规律，茎干液流随环境因子变化而波动；
North-Chaihu's stem tufts or grows single, there isn't any fabric leafstalk, and the remnant is purple red.
北柴胡茎从生或单生，茎基部无纤维状叶柄，残基物为紫红色；
North-Chaihu's stem tufts or grows single, there isn't any fabric leafstalk, and the remnant is purple red.
北柴胡茎从生或单生，茎基部无纤维状叶柄，残基物为紫红色；
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